I am taking an IT class that is a bit over my head, but trying hard to keep up.
On a lab to regarding network topology using port scanners, I am instructed to "to develop a network inventory and topology for the 123.218.44.0/24 subnet."
What does the notation 0/24 mean there? I had assumed it meant to consider the network range 123.218.44.0 to 123.218.44.24. When I use nmap against a range, using parameters in this format:
nmap -sS -O 123.218.44.0/24
nmap reports that it scanned 256 hosts, presumably 123.218.44.0 to 123.218.44.255. There is only one host between 0 and 24, but there are 4 hosts between 101 and 255. I assume that I am meant to find all 5 of those hosts, but I don't understand the notation so I'm not sure. Can anyone clarify for me?